PART 1

This species was treated in 1990 as Ditremis sp. Wheeler 15-4-89 from Polk County. Better material
collected by Wetmore in Georgia makes its recognition here warranted.
Additional specimen. FLORIDA. Polk County: Nalcrest, W side of recreation area, on fallen oak branch, 15
Apr 1989, Wheeler s.n. (NY).
Anisomeridium distans (Willey) R. C. Harris
in Egan, Bryologist 90: 163. 1987. Verrucaria distans Willey, Enum. Lich. New Bedford 38.
1892. Arthopyrenia distans (Willey) Zahlbr., Cat. Lich. Univ. 1: 276. 1921. Ditremis distans
(Willey) R. C. Harris, Some Florida Lichens 32. 1990. Type. MASSACHUSETTS. Bristol County:
New Bedford, 1866, Willey (MICH, isotype).
Anisomeridium excaecariae (Müll. Arg.) R. C. Harris, comb. nov.
Sagedia excaecariae Müll. Arg., Flora 63: 289. 1880. Arthopyrenia excaecariae (Müll. Arg.)
Müll. Arg., Flora 66: 305. 1883. Type. ARGENTINA. Buenos Aires, on Excaecaria biglandulosa,
Schnyder 2 (G, holotype).
Arthopyrenia incurva Müll. Arg., Flora 66: 305. 1883. Type. BRAZIL. São Paulo: Apiaí, Mar
1880, Puiggari 138.b pr. p. (G, holotype).
Arthopyrenia sanfordensis Zahlbr., Ann. Mycol. 33: 33. 1935. Anisomeridium sanfordense
(Zahlbr.) R. C. Harris in Egan, Bryologist 90: 163. 1987. Ditremis sanfordensis (Zahlbr.) R. C.
Harris, Some Florida Lichens 34. 1990. Type. FLORIDA. Seminole County: Sanford, on
persimmon, Apr 1932, Rapp 134 (W-2460, holotype).
Anisomeridium finkii (R. C. Harris) R. C. Harris, comb. nov.
Ditremis finkii R. C. Harris, Some Florida Lichens 32. 1990. Type. PUERTO RICO. Arecibo District:
Manati, 12 Jan 1916, Fink 2052 (US, holotype; FH, isotype).
Anisomeridium griffinii R. C. Harris, sp. nov.
Thallo albo, UV-, ostiolo eccentrico, ascosporis ovoideis vel interdum late fusiformibus, laevibus, septis
distincte submedianis, 32-38 × 13.5-18 µm et macroconidiis ovoideis, 5-7 × 2.5-4 µm.
Type. FLORIDA. Marion County: ca. 0.5 mi S of U.S. 40 & 1 mi W of Oklawaha River bridge, mesic hammock
of Liquidambar styraciflua, Celtis laevigata, Sapindus marginata & Quercus virginiana, on trunk of Ulmus
crassifolia, 23 May 1994, Griffin 3217 (NY, holotype; ESS, FLAS, H, isotypes).
Thallus white, endophloeodal, UV-. Ascomata covered by thin layer of thallus, ± lageniform, ca. 0.5-0.6 ×
0.4 mm; ostiole eccentric to lateral; wall entirely melanized or only to base of hamathecium. Asci cylindrical to
subclavate, 150-210 × 30-40 µm, with eight biseriate spores. Ascospores ovoid or somewhat fusiform, slightly
constricted at the markedly submedian septum, smooth, 32-40 × 12-18 µm; microconidia subglobose, ca. 2
µm diam.; macroconidia ovoid, 5-7 × 2.5-4 µm.
It is a genuine pleasure to name this species to honor its collector, Dana Griffin, III, who has unstintingly
supported work on Florida lichens. Anisomeridium griffinii seems closest to Asian A. palvanum, differing in
larger ascospores. In Florida it might be confused with A. ambiguum which differs in UV+ thallus and apical
ostiole. Anisomeridium griffini was treated in 1990 as Ditremis sp. 11288 and Ditremis sp. Buck B724 (ostiole
orientation misunderstood).
Additional specimens. FLORIDA. Duval County: Jacksonville Beach, flood plain forest W and NW of 23rd
& 24th St. N., between 9th & 11th Ave. N., on Liquidambar, 23 Dec 1975, Buck B724; Franklin County:
Apalachicola National Forest, Hickory Landing Rec. Area, ca. 2 mi S of Sumatra, hardwoods along Owl Creek,
23 May 1976, Harris 11288 (both NY).
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